R410a Application and Service Guide

Although the bulk of this manual is information regarding R410a, R407c will also be discussed for purposes of comparison and since it is one of the so- called new refrigerants.

R410a Overview

R410a is a non-chlorine based (HFC) refrigerant, that with R407c and R134a, is seen as the future of all refrig- erants used worldwide. R410a characteristics compared to R22 are:

•Binary and near azeotropic mixture of R32-50% and R125-50%

•Higher efficiencies

•Higher operating pressures

•Requires POE oil in compressors

•In some systems can result in smaller heat exchang- ers with the same performance

•Low global warming potential and zero ozone depletion (0.39/0.0)

•Temperature glide of 0.2°F

•Containers are “ROSE” colored

R407c Overview

R407a is a non-chlorine based (HFC) refrigerant. R407c characteristics compared to R22 are:

•Ternary and near azeotropic mixture of R32-23%, R125-25%, R134a-52%

•Slightly lower efficiencies

•Nearly equal operating pressures

•Requires POE oil in compressors

•Considered a near drop-in replacement for R22

•Low global warming potential and zero ozone depletion (0.34/0.0)

•Temperature glide of 10°F

•Containers are “MEDIUM BROWN” colored

What is “Glide”?

Pure compounds like CFC-R12 boil and condense at exactly the same temperature for a given pressure. Near- azeotropic blends are not pure compounds but a blend of compounds. These compounds will have a temperature glide or range of temperatures in which the blend will boil or condense. In these situations, for example R407c, a chart listing a bubble and dew point must be used as the pressure/temperature chart since it has a glide of 10°F. The bubble point is used for subcooling calculations. The dew point is used for superheat calculations. See Table 1. R410a has a very small glide (0.2°F) and acts as a single component refrigerant. Therefore R410a can

utilize a more traditional table with only one pressure column as shown in Table 2.

What is “Fractionation”?

Many of the newer refrigerants are a blend of two or more other refrigerants. At various conditions these compo- nents can separate and change the ratio of the original mixture and in effect change the total performance of the remaining blend. Therefore it is recommended to use the refrigerant in liquid form, insuring that all of the compo- nents are handled together in the proper blend.

Table 1. R407c Pressure/Temperature Chart

R407c

Temperature

Bubble

Dew

 

Pressure

Pressure

° F

(for subcooling)

for (superheat)

psig

psig

-15

17.2

9.2

-10

21.0

12.3

-5

25.1

15.7

0

29.5

19.4

5

34.4

23.4

10

39.6

27.8

15

45.2

32.6

20

51.3

37.8

25

57.8

43.4

30

64.8

49.4

35

72.4

56.0

40

80.4

63.0

45

89.0

70.6

50

98.1

78.7

55

107.9

87.4

60

11 8.2

96.7

65

129.2

106.6

70

140.9

1 17.1

75

153.2

128.4

80

166.2

140.4

85

1 80.0

153.1

90

194.6

166.5

95

209.9

180.8

100

226.0

195.9

105

243.0

21 1.9

11 0

260.8

228.7

11 5

279.5

246.5

120

299.0

265.3

125

319.6

285.0

130

341.0

305.8

135

363.4

327.6

140

386.9

350.5

145

41 1.3

374.6

150

436.8

399.8

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Heat Controller R410A manual R410a Overview, R407c Overview, What is Glide?, What is Fractionation?
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R410A specifications

The heat controller R410A is a modern refrigerant that has gained significant popularity in recent years, particularly in air conditioning systems and heat pumps. As an environmentally friendlier alternative to older refrigerants, R410A is primarily composed of a blend of two hydrofluorocarbons (HFCs): R-32 and R-125. This combination offers several advantages, making it a preferred choice for both residential and commercial heating and cooling applications.

One of the main features of R410A is its high efficiency. This refrigerant operates at higher pressures than traditional refrigerants like R22. As a result, systems designed to use R410A can achieve higher cooling capacities and overall energy efficiency. This leads to better performance and lower energy consumption, which is beneficial not only for the environment but also for consumers seeking to reduce energy bills.

Additionally, R410A is designed to have a significantly lower ozone depletion potential (ODP) compared to older refrigerants. It has an ODP of zero, meaning it does not contribute to the depletion of the ozone layer, aligning with global efforts to protect the environment. Furthermore, R410A has a lower global warming potential (GWP) than many traditional refrigerants, which further enhances its reputation as an eco-friendly refrigerant option.

When it comes to technologies, R410A has been integrated into various heat pump and air conditioning systems, many of which utilize advanced inverter technology. This technology allows the compressor to adjust its speed according to the cooling or heating demand, optimizing energy consumption and enhancing comfort levels. Additionally, systems using R410A are often equipped with enhanced heat exchange surfaces, allowing for better heat transfer and overall system efficiency.

Another characteristic of R410A is its compatibility with modern lubricants, which improves system performance and reliability. These lubricants are specifically formulated to work effectively with R410A, ensuring that systems maintain optimal efficiency throughout their operational lifespan.

In summary, the heat controller R410A boasts a range of features, technologies, and characteristics that make it a leading choice in the HVAC industry. With its high efficiency, low environmental impact, and compatibility with advanced systems, R410A continues to play a pivotal role in modern heating and cooling solutions. As the industry moves toward greener alternatives, R410A stands out as a viable refrigerant option for the future.
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